Loosing Coolant
Senior User
Joined: Sep 2008
Posts: 303
Likes: 1
From: Northern Calif
Try this. While the motor is cold fill the radiator to the top. Put the cap on. Then fill the coolant recovery tank full to the top with coolant. I know it says max and min on the tank , but fill it all the way up. Have a catch tray ready in your drive way or garage standing bye. I assume you have already put your new cap on. If not prior to all this buy a new one. Once filled take the X for a drive and get it warmed up. Bring it home , and leave it running in park,and put the drain pan under the over flow tube from the radiator or recovery tank to catch the coolant that will spill out. Once it stops spilling out turn the motor off and let it cool down. Way down, Then once cool open the radiator cap and refill it to it's normal level, and also fill the recovery tank just above the minimum line. At this point the truck will be air free. We used this process all the time in the shop. Try it and see if it works. if it does it's a cheap fix.
Senior User
Joined: Apr 2007
Posts: 187
Likes: 0
From: texas
I have seen the v10 leak coolant at the t-stat housing and coolant go in the spark hole next to t-stat. I think their are bleeder screews on intake you can open to vent air out.
only do this when it cold eng not running and cap off air will get out you add more coolant.
only do this when it cold eng not running and cap off air will get out you add more coolant.
Post Fiend
Joined: May 2006
Posts: 10,007
Likes: 4
From: Central Florida
I believe the F150s had the trouble with the heater hose leaking and taking out a coil or two. Then the earily 4.6l developed pin hole leaks in the crossover/T-stat housing that shot coolant all over the place. What year range of V10 had a similar issue?
Reverse flow systems are the only ones I've seen with bleeders and they had to bleed while running to force the air up. The procedure was to start the engine, it had to warm up so the t-stat would open then you cracked the valve open and let it breath until water came out. Let it cool and try again.
Reverse flow systems are the only ones I've seen with bleeders and they had to bleed while running to force the air up. The procedure was to start the engine, it had to warm up so the t-stat would open then you cracked the valve open and let it breath until water came out. Let it cool and try again.
Senior User
Joined: Sep 2008
Posts: 303
Likes: 1
From: Northern Calif
Yeah it sounds like the newer dodge and Chrysler cars. We would do this bleeding method and it does work, but when your working on two or more vehicles at a time it takes less time performing the method I described. Whatever works I guess. I just hope FordTruckGirl77 gets her's going.
Senior User
Joined: Apr 2007
Posts: 187
Likes: 0
From: texas
I was not talking about the overflow. I was talking about the t-stat o-ring leaking and coolant getting in the spark plug holes next to the t-stat. Just something I've seen before. I said this because she said it smell rich and there no leaks on the ground. On the f-150 and exps the a/c lines would drop water on the rear coil and water would make it way to sparkplug hole causing a missfire or short the coil. Just trying help.
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Senior User
Joined: Aug 2007
Posts: 319
Likes: 0
From: Granada Hills, CA
Thanks guys for all your advise. We haven't had a chance to work on the X yet, its been raining and snowing here in SoCal. I am hoping Sunday will be a nice day to do it. I will be picking up a new cap tomorrow along with a stinking brake light that just went out!
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